whips and dressage

Usually follow BD rules, whips are allowed to be carried in a test unless it is a championship final (you can warm up with a whip). There are rules about the length of the whip but as long as you have a standard schooling one it's ok.
 
Sorry to hijack the post but I'm struggling with a whip issue too. I've just read the rules on whips on BD. But it doesn't mention the length. Can I carry a short whip or must it be a long schooling whip?
 
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